| character_set_client | utf8mb4 | data sent by the client | ✓ | |
| character_set_connection | utf8mb4 | server converts client data into this charset for processing | ✓ | |
| collation_connection | utf8mb4_0900_ai_ci | server uses this collation for processing | ✓ | |
| character_set_results | utf8mb4 | data and metadata sent by the server | ✓ | |
| character_set_server | utf8mb4 | default (and fallback) charset for objects | ✓ | |
| collation_server | utf8mb4_0900_ai_ci | default (and fallback) collation for objects | ✓ |
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